12443044121 has 16 divisors (see below), whose sum is σ = 13428629760. Its totient is φ = 11491009920.

The previous prime is 12443044111. The next prime is 12443044139. The reversal of 12443044121 is 12144034421.

12443044121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12443044121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12443044111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1027715 + ... + 1039751.

It is an arithmetic number, because the mean of its divisors is an integer number (839289360).

Almost surely, 2^12443044121 is an apocalyptic number.

It is an amenable number.

12443044121 is a deficient number, since it is larger than the sum of its proper divisors (985585639).

12443044121 is a wasteful number, since it uses less digits than its factorization.

12443044121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13424.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 12443044121 its reverse (12144034421), we get a palindrome (24587078542).

The spelling of 12443044121 in words is "twelve billion, four hundred forty-three million, forty-four thousand, one hundred twenty-one".